diff --git a/src/main/java/org/alfresco/opencmis/CMISConnector.java b/src/main/java/org/alfresco/opencmis/CMISConnector.java
index 18773e976c..a188b3e38c 100644
--- a/src/main/java/org/alfresco/opencmis/CMISConnector.java
+++ b/src/main/java/org/alfresco/opencmis/CMISConnector.java
@@ -3097,13 +3097,14 @@ public class CMISConnector implements ApplicationContextAware, ApplicationListen
                     throw new CmisInvalidArgumentException("Property " + property.getId() + " is unknown!");
                 }
             }
+
+            Boolean isOnWorkingCopy = checkOutCheckInService.isWorkingCopy(nodeRef);
+            Updatability updatability = propDef.getPropertyDefinition().getUpdatability();
+            if (!isUpdatable(updatability, isOnWorkingCopy))
+            {
+                throw new CmisInvalidArgumentException("Property " + propertyId + " is read-only!");
+            }
 
-            Updatability updatability = propDef.getPropertyDefinition().getUpdatability();
-            if ((updatability == Updatability.READONLY)
-                    || (updatability == Updatability.WHENCHECKEDOUT && !checkOutCheckInService.isWorkingCopy(nodeRef)))
-            {
-                throw new CmisInvalidArgumentException("Property " + property.getId() + " is read-only!");
-            }
             TypeDefinitionWrapper propType = propDef.getOwningType();
             Serializable value = getValue(property, propDef.getPropertyDefinition().getCardinality() == Cardinality.MULTI);
             Pair<TypeDefinitionWrapper, Serializable> pair = new Pair<TypeDefinitionWrapper, Serializable>(propType, value);
@@ -3127,21 +3128,21 @@ public class CMISConnector implements ApplicationContextAware, ApplicationListen
             }
         }
 
-        for (String propertyId : propsMap.keySet())
-        {
-            if(propertyId.equals(PropertyIds.SECONDARY_OBJECT_TYPE_IDS))
-            {
-                // already handled above
-                continue;
-            }
-
-            pair = propsMap.get(propertyId);
-            TypeDefinitionWrapper propType = pair.getFirst();
-            Serializable value = pair.getSecond();
-            if (Arrays.binarySearch(exclude, propertyId) < 0)
-            {
-                setProperty(nodeRef, propType, propertyId, value);
-            }
+        for (String propertyId : propsMap.keySet())
+        {
+            if (propertyId.equals(PropertyIds.SECONDARY_OBJECT_TYPE_IDS))
+            {
+                // already handled above
+                continue;
+            }
+
+            pair = propsMap.get(propertyId);
+            TypeDefinitionWrapper propType = pair.getFirst();
+            Serializable value = pair.getSecond();
+            if (Arrays.binarySearch(exclude, propertyId) < 0)
+            {
+                setProperty(nodeRef, propType, propertyId, value);
+            }
         }
 
         List<CmisExtensionElement> extensions = properties.getExtensions();
@@ -3226,26 +3227,6 @@ public class CMISConnector implements ApplicationContextAware, ApplicationListen
         for(QName aspectQName : toAdd)
         {
             nodeService.addAspect(nodeRef, aspectQName, null);
-            
-            // get aspect properties
-            AspectDefinition aspectDef = dictionaryService.getAspect(aspectQName);
-            Map<QName, org.alfresco.service.cmr.dictionary.PropertyDefinition> aspectPropDefs = aspectDef.getProperties();
-            TypeDefinitionWrapper w = getOpenCMISDictionaryService().findNodeType(aspectQName);
-            // for each aspect property...
-            for(QName propQName : aspectPropDefs.keySet())
-            {
-                // find CMIS property id
-                PropertyDefinitionWrapper property = w.getPropertyByQName(propQName);
-                String propertyId = property.getPropertyId();
-                if(!propsToAdd.containsKey(propertyId))
-                {
-                    TypeDefinitionWrapper propType = property.getOwningType();
-                    // CMIS 1.1 secondary types specification requires that all secondary type properties are set
-                    // property not included in propsToAdd, add it with null value
-                    Pair<TypeDefinitionWrapper, Serializable> pair = new Pair<TypeDefinitionWrapper, Serializable>(propType, null);
-                    propsToAdd.put(propertyId, pair);
-                }
-            }
         }
     }
 
@@ -3579,13 +3560,13 @@ public class CMISConnector implements ApplicationContextAware, ApplicationListen
         {
             throw new CmisInvalidArgumentException("Property " + propertyId + " is unknown!");
         }
-
+
+        Boolean isOnWorkingCopy = checkOutCheckInService.isWorkingCopy(nodeRef);
         Updatability updatability = propDef.getPropertyDefinition().getUpdatability();
-        if ((updatability == Updatability.READONLY)
-                || (updatability == Updatability.WHENCHECKEDOUT && !checkOutCheckInService.isWorkingCopy(nodeRef)))
-        {
-            throw new CmisInvalidArgumentException("Property " + propertyId + " is read-only!");
-        }
+        if (!isUpdatable(updatability, isOnWorkingCopy))
+        {
+            throw new CmisInvalidArgumentException("Property " + propertyId + " is read-only!");
+        }
 
         if(propDef.getPropertyId().equals(PropertyIds.SECONDARY_OBJECT_TYPE_IDS))
         {
@@ -3610,7 +3591,7 @@ public class CMISConnector implements ApplicationContextAware, ApplicationListen
                 {
                     String newName = value.toString();
                     // If the node is checked out and the name property is set on the working copy, make sure the new name has the working copy format
-                    if (checkOutCheckInService.isWorkingCopy(nodeRef))
+                    if (isOnWorkingCopy)
                     {
                         String wcLabel = (String)this.nodeService.getProperty(nodeRef, ContentModel.PROP_WORKING_COPY_LABEL);
                         if (wcLabel == null)
@@ -4109,5 +4090,24 @@ public class CMISConnector implements ApplicationContextAware, ApplicationListen
             singletonCache.put(KEY_CMIS_RENDITION_MAPPING_NODEREF, renditionMapping);
         }
         return renditionMapping;
+    }
+
+    /**
+     * Verify if a property is updatable. 
+     * @param updatability
+     * @param isOnWorkingCopy
+     * @return
+     */
+    private boolean isUpdatable(Updatability updatability, Boolean isOnWorkingCopy)
+    {
+        if ((updatability == Updatability.READONLY)
+                || (updatability == Updatability.WHENCHECKEDOUT && !isOnWorkingCopy))
+        {
+            return false;
+        }
+        else
+        {
+            return true;
+        }
     }
 }
diff --git a/src/test/java/org/alfresco/opencmis/CMISTest.java b/src/test/java/org/alfresco/opencmis/CMISTest.java
index b0a69bb7cb..19071d6309 100644
--- a/src/test/java/org/alfresco/opencmis/CMISTest.java
+++ b/src/test/java/org/alfresco/opencmis/CMISTest.java
@@ -3352,7 +3352,19 @@ public class CMISTest
                         
                         cmisService.updateProperties(repositoryId, new Holder<String>(fileInfo.getNodeRef().toString()), null, properties, null);
                     }
-                    
+                    //This extra check was added due to MNT-16641.
+                    {
+                        PropertiesImpl properties = new PropertiesImpl();
+                        properties.addProperty(new PropertyStringImpl(PropertyIds.SECONDARY_OBJECT_TYPE_IDS, "P:cm:lockable"));
+
+                        Set<QName> existingAspects = nodeService.getAspects(docs.get(0).getNodeRef());
+                        cmisService.updateProperties(repositoryId,new Holder<String>(docs.get(0).getNodeRef().toString()), null, properties, null);
+                        Set<QName> updatedAspects = nodeService.getAspects(docs.get(0).getNodeRef());
+                        updatedAspects.removeAll(existingAspects);
+
+                        assertEquals(ContentModel.ASPECT_LOCKABLE, updatedAspects.iterator().next());
+
+                    }
                     return repositoryId;
                 }
             }, CmisVersion.CMIS_1_1);